Python Django个人网站搭建8-对用户登陆注册的实现

python manage.py startapp userprofile

Microsoft Windows [版本 10.0.14393]
(c) 2016 Microsoft Corporation。保留所有权利。

C:\Users\Administrator>cd..

C:\Users>cd..

C:\>cd mysite

C:\mysite>python manage.py startapp userprofile

C:\mysite>

from django import forms
from django.contrib.auth.models import User

class UserLoginForm(forms.Form):
   username = forms.CharField()
   password = forms.CharField()

from django.contrib.auth import authenticate, login
from django.http import HttpResponse
from django.shortcuts import render
from userprofile.froms import UserLoginForm

def user_login(request):
   if request.method == "POST":
       user_login_form = UserLoginForm(data=request.POST)
       if user_login_form.is_valid():
           # .cleaned_data洗出合法数据
           data = user_login_form.cleaned_data
           # 检验账号、密码是否正确匹配数据库中的某个用户
           # 如果均匹配则返回这个user对象
           user = authenticate(username=data['username'], password=data['password'])
           if user:
               login(request, user)
               return redirect("article:article_list")
           else:
               return HttpResponse("账号或密码输入有误,请重新输入")
       else:
           return HttpResponse("账号或密码输入不合法")
   elif request.method =="GET":
       user_login_form = UserLoginForm()
       context = {'from': user_login_form}
       return render(request, 'userprofile/login.html', context)
   else:
       return HttpResponse("请使用GET或POST请求数据")

{% extends "base.html" %}
{% load static %}
{% block title %}
   Login
{% endblock title %}
{% block content %}
   <div class="container">
       <div class="row">
           <div class="col-12">
               <br>
               <form method="post" action=".">
                   {% csrf_token %}
                   <div class="form-group">
                       <label for="username">Username</label>
                       <input type="text" class="form-control" id="username" name="username">
                   </div>
                   <div class="form-group">
                       <label for="password">Password</label>
                       <input type="password" class="form-control" id="password" name="password">
                   </div>
                   <button type="submit" class="btn btn-primary">Login</button>
               </form>
           </div>
       </div>
   </div>
{% endblock content %}

<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
 <div class="container">
   <a class="navbar-brand" href="#">My Site</a>
   <div>
     <ul class="navbar-nav">
       <li class="nav-item">
         <a class="nav-link" href="{% url 'article:article_list' %}">Article</a>
       </li>
         <li class="nav-item">
             <a class="nav-link" href="{% url 'article:article_create' %}">New</a>
         </li>
         {% if user.is_authenticated %}
           <li class="nav-item dropdown">
               <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                 {{ user.username }}
               </a>
               <div class="dropdown-menu" aria-labelledby="navbarDropdown">
                 <a class="dropdown-item" href="#">Exit</a>
               </div>
           </li>
           {% else %}
               <li class="nav-item">
                   <a class="nav-link" href="{% url 'userprofile:login' %}">Login</a>
               </li>
         {% endif %}
     </ul>
   </div>
 </div>
</nav>

from django.urls import path
from . import views

app_name = 'userprofile'

urlpatterns=[
   path('login/', views.user_login, name='login'),
]

path('userprofile/', include('userprofile.urls', namespace='userprofile')),

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'article',
    'userprofile',
]